My Bibliography:

• http://en.wikipedia.org/wiki/File:Helium-glow.jpg

• http://www.chemicalelements.com/groups/noblegases.html

• http://chemistry.about.com/od/elementgroups/a/noblegases.htm

• http://www.chem4kids.com/files/elem_noblegas.html

*All pictures found in the presentation have links to verify where I found them.